CN110253168B - Process method for aligning dovetail type positioning rib of steam turbine generator - Google Patents
Process method for aligning dovetail type positioning rib of steam turbine generator Download PDFInfo
- Publication number
- CN110253168B CN110253168B CN201910601974.8A CN201910601974A CN110253168B CN 110253168 B CN110253168 B CN 110253168B CN 201910601974 A CN201910601974 A CN 201910601974A CN 110253168 B CN110253168 B CN 110253168B
- Authority
- CN
- China
- Prior art keywords
- positioning rib
- positioning
- ribs
- rib
- machine base
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000003466 welding Methods 0.000 claims abstract description 39
- 238000005259 measurement Methods 0.000 claims abstract description 22
- 238000007405 data analysis Methods 0.000 claims abstract description 16
- 241000272201 Columbiformes Species 0.000 claims abstract description 5
- 238000005192 partition Methods 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 7
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 abstract description 7
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 210000003205 muscle Anatomy 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
- B23K37/04—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass for holding or positioning work
- B23K37/0426—Fixtures for other work
- B23K37/0435—Clamps
- B23K37/0443—Jigs
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a process method for aligning a dovetail positioning rib of a steam turbine generator, which adopts an optical measurement mode according to the structural characteristics and the assembly requirements of the dovetail positioning rib of a large steam turbine generator, uses a laser tracker to measure the central coordinates of an upper end plate and a lower end plate of a machine base as the reference of the assembly of the positioning rib, uses a measuring tool to measure the position coordinate of the positioning rib, compares and analyzes the measured data of the positioning rib with the theoretical position coordinate, and finally obtains the position deviation of the positioning rib, and the positioning ribs are adjusted one by one according to the data analysis result, so that accumulated errors caused by adjustment based on the main ribs are avoided, the problems that the requirements of the large-scale steam turbine generator on the inner diameter, the chord length and the torsion of the welding assembly of the positioning ribs are high, and the size relevance of the positioning ribs is high are solved, and the welding assembly quality of the pigeon tail type positioning ribs of the large-scale steam turbine generator is ensured.
Description
Technical Field
The invention relates to a novel process method for aligning dovetail-shaped positioning ribs of a large-sized steam turbine generator.
Background
The traditional turbine generator dove tail type location muscle alignment adopts and uses steel wire or center pillar as the mode of benchmark to carry out the alignment. The steel wire is stretched and coiled into a disc shape for storage in the manufacturing process, so that the steel wire is in a spiral shape, and even if the steel wire is straightened before use, a measurement error of 0.4mm still exists under the influence of the spiral of the steel wire in actual application. The process method for aligning the positioning ribs by taking the central column as a reference is limited by the processing precision of the central column, and the straightness error of a central column with the length of ten meters is more than 0.4 mm. Meanwhile, the mode of using the steel wire or the center post for alignment has the defects of large environmental influence, more tool tools and the like. Along with the continuous promotion of turbo generator unit capacity, large-scale turbo generator has higher to internal diameter, chord length and the degree of torsion requirement of positioning rib welding assembly, and each size relevance of positioning rib is great, and the tradition uses steel wire or center column to carry out positioning rib alignment as the benchmark and can't satisfy positioning rib welding assembly's required precision. Therefore, the invention discloses a novel process method for aligning the dove tail type positioning rib of the large-scale steam turbine generator based on an optical measurement mode.
Disclosure of Invention
The invention aims to provide a novel process method for aligning a dovetail positioning rib of a steam turbine generator, which solves the problems that the requirements of a large steam turbine generator on the inner diameter, the chord length and the torsion of the welding assembly of the positioning rib are high, and the relevance of the sizes of the positioning rib is high, and ensures the welding assembly quality of the positioning rib of the large steam turbine generator. The technical scheme of the invention is as follows:
1. 4 square boxes (1) with the same height are placed at the installation stations of the positioning ribs (7);
2. vertically placing the machine base (2) on the square box (1), wherein the end face of the machine base (2) faces upwards;
3. adjusting the verticality of the base (2) and the ground to be less than or equal to 0.1mm by using a level gauge, wherein the alignment part is a base foot (3);
4. adjusting the levelness of the upper end surface of the machine base (2) by using a level meter, wherein the alignment positions are the four positions of the circumference of the upper end surface of the machine base (2) in an equal division way, and the levelness of the symmetrical positions is required to be less than or equal to 0.05 mm;
5. a fixed cross beam (4) is arranged on the upper end face of the machine base (2), the center of the fixed cross beam (4) is adjusted to be concentric with the machine base (2), and the center deviation is less than or equal to 5 mm;
6. a laser tracker (5) is horizontally arranged below the fixed cross beam (4);
7. measuring the central coordinates of an upper end plate (11) and a lower end plate (12) of the machine base (2) by using a laser tracker (5), wherein four points are measured up and down and the two measurement points are separated by 90 degrees;
8. establishing a central connecting line between an upper end plate (11) and a lower end plate (12) of the machine base (2), wherein the central line is the center of the machine base (2) and is used as a reference for assembling the positioning ribs (7);
9. establishing theoretical position coordinates of all positioning ribs (7) according to the drawing size and using the theoretical position coordinates as a reference for alignment of the positioning ribs (7);
10. hoisting the positioning rib (7) into the base (2), and temporarily fixing two ends of the positioning rib (7) on the partition plate (6) by using an adjusting clamp (8);
11. adjusting the axial position, the circumferential position and the angle of the positioning rib (7) by using an adjusting clamp (8);
12. measuring the inner diameter of the positioning rib (7) by using a laser tracker (5), wherein a measuring tool (9) comprises an L-shaped end and a V-shaped end, the L-shaped end of the measuring tool (9) is respectively placed at two sides of the dove tail type positioning rib (7), a hollow target ball (10) is placed at the V-shaped end of the measuring tool (9), reliable contact between the hollow target ball (10) and the measuring tool (9) is ensured, and the position coordinate of the positioning rib (7) is measured by using the laser tracker (5);
13. each positioning rib (7) is axially and totally measured at 6 positions, including 4 welding positions of the positioning ribs (7) and the machine base (2) and positions of the end heads at two ends of the positioning ribs (7), each position needs to be respectively measured for position coordinates of two sides of the dove-tail positioning rib (7), each positioning rib (7) is totally required to measure 12 groups of data, each product is totally provided with 18 positioning ribs (7), and 216 groups of data are required to be measured;
14. after the two sides of the positioning rib (7) are respectively measured, the coordinate of the central point of the positioning rib (7) is calculated, and the following two key dimensions are calculated through the coordinate of the central point of the positioning rib (7): the distance between the center of the positioning rib (7) and the center of the machine base (2), namely the radius of the positioning rib (7); the distance between the centers of the adjacent positioning ribs (7), namely the chord distance of the positioning ribs (7);
15. comparing and analyzing the measured data of the positioning rib (7) with the theoretical position coordinates to finally obtain the pigeon tail plane angle deviation of the positioning rib (7), and readjusting the positioning rib (7) according to the data analysis result when the deviation exceeds a specified value;
16. comparing and analyzing the measured data of the positioning rib (7) with the theoretical position coordinate, comparing and analyzing the calculated radius and chord distance size of the positioning rib (7) with the drawing requirement, wherein the required radius size is 0.2-0.3mm smaller than the nominal size, the difference between the maximum value and the minimum value of the chord distance is not more than 0.2mm, finally obtaining the position deviation of the positioning rib (7), and readjusting the positioning rib (7) according to the data analysis result when the deviation exceeds the specified value;
17. comparing and analyzing the measured data of the positioning rib (7) with the theoretical position coordinates to finally obtain the verticality deviation of the positioning rib (7), and readjusting the positioning rib (7) according to the data analysis result when the deviation exceeds a specified value;
18. after the position of the positioning rib (7) is adjusted to be qualified, the positioning rib (7) and the partition plate (6) are fixed in a spot welding mode;
19. re-measuring the position coordinates of all the positioning ribs (7), comparing and analyzing the position coordinates with the theoretical position coordinates, and locally adjusting the positioning ribs (7) according to the data analysis result;
20. after the positioning ribs (7) are completely adjusted to be qualified, full welding is carried out on the welding seams between the positioning ribs (7) and the partition plates (6);
21. and after the welding seam is fully welded, re-measuring position coordinates of all the positioning ribs (7), comparing and analyzing the position coordinates with theoretical position coordinates, checking whether the welding assembly of the positioning ribs (7) meets the requirements of a drawing, grinding the welding seam of the positioning ribs (7) when the deviation exceeds a specified value, re-adjusting the positioning ribs (7) according to the data analysis result until all the welding assemblies are qualified, and finishing the welding assembly of the positioning ribs (7).
The technical effects are as follows:
1. the invention realizes a new process method for aligning the dove tail type positioning rib of the large-scale steam turbine generator based on an optical measurement mode for the first time. Before this, turbo generator dove tail type location muscle alignment adopts and uses steel wire or center post to carry out the alignment as the mode of benchmark, receives the influence of steel wire spiral to have 0.4 mm's measuring error, receives the influence of center post machining precision to have 0.4 mm's measuring error. The invention realizes a new process method for aligning the dove-tail type positioning rib based on an optical measurement mode, has the characteristics of high precision, high efficiency, real-time tracking measurement, quick installation, simple and convenient operation and the like, and solves the problems that a large-scale steam turbine generator has higher requirements on the inner diameter, the chord distance and the torsion of the welding assembly of the positioning rib and the relevance of the sizes of the positioning rib is higher.
2. The invention realizes the breakthrough that the alignment of the positioning rib is not influenced by the measurement state and the tool for the first time. Before this, turbonator dove tail type location muscle alignment adopts and uses steel wire or center pillar to carry out the alignment as the mode of benchmark, receives the change of steel wire or center pillar installation state when the location muscle is aligned, and the alignment benchmark will change, leads to measured data to appear the error, and operating personnel uses the long-time continuous measurement of internal diameter chi simultaneously also can influence measured data's accuracy. In the invention, the laser tracker is used for measuring the position coordinates of the positioning rib, and the laser tracker has the characteristics of shortest light path, shortest error transmission chain and realization of non-reflection light path, thereby reducing error sources to the maximum extent. The precision of the light path of the laser tracker is consistent in any angle, the laser tracker can adapt to different temperature conditions, the purpose of high-precision measurement is achieved, meanwhile, the stability of laser is guaranteed under long-time working conditions, the laser tracker is not influenced by human of operators, measurement precision is guaranteed, and the problem that the alignment of the positioning rib is not influenced by a measurement state and a tool is solved.
3. The invention realizes the logic measurement and detection by using optical measurement. Before the measurement data are aligned by the aid of the dovetail positioning ribs of the turbonator, the measurement data are manually recorded and calculated by technicians, the calculated amount is large, and errors are prone to occurring. The invention realizes the logical measurement and detection by using the optical measurement, and the calculation and analysis by using the position coordinate measured by the laser tracker are accurate and efficient.
4. The positioning rib alignment device is successfully applied to welding and assembling the positioning ribs of the 300MW steam turbine generator, the inner diameter, the chord length and the torsion of the positioning ribs after welding and assembling the positioning ribs meet the requirements of a drawing, and the positioning rib alignment based on an optical measurement mode has the characteristics of quick installation operation, high alignment precision, high repeated positioning precision and high measurement efficiency.
Drawings
FIG. 1 is a schematic view of a station layout for welding and assembling a dovetail-shaped positioning rib of a steam turbine generator;
FIG. 2 is a schematic view of alignment measurement of a dovetail-shaped positioning rib of a steam turbine generator;
FIG. 3 is a schematic view of a dovetail-shaped positioning rib being adjusted by an adjusting jig;
fig. 4 is a schematic view of measuring the position coordinates of the dove-tail type positioning rib by using a measuring tool.
In the figure: 1. the device comprises a square box, 2 parts of a machine base, 3 parts of a machine base bottom foot, 4 parts of a fixed cross beam, 5 parts of a laser tracker, 6 parts of a partition plate, 7 parts of a positioning rib, 8 parts of an adjusting clamp, 9 parts of a measuring tool, 10 parts of a hollow target ball, 11 parts of an upper end plate and 12 parts of a lower end plate.
Detailed Description
As shown in fig. 1, the positioning rib 7 welding assembly station arrangement of the present invention is applied. The method comprises the following steps of placing 4 square boxes 1 with the same height at an installation station of a positioning rib 7, vertically placing a machine base 2 on the square boxes 1, installing a fixed cross beam 4 on the upper end face of the machine base 2, and installing a laser tracker 5 below the fixed cross beam 4 in a horizontal mode. The laser tracker 5 is used for measuring the center coordinates of the upper end plate 11 and the lower end plate 12 of the machine base 2, and a center connecting line of the upper end plate 11 and the lower end plate 12 of the machine base 2 is established, wherein the center line is the center of the machine base 2 and can be used as a reference for assembling the positioning rib 7. And establishing theoretical position coordinates of all the positioning ribs 7 according to the drawing size and using the theoretical position coordinates as a reference for aligning the positioning ribs 7.
As shown in fig. 2, the positioning rib 7 is hung into the housing 2, and both ends of the positioning rib 7 are temporarily fixed to the partition 6.
As shown in fig. 3, the axial position, the circumferential position, and the angle of the positioning rib 7 are adjusted using the adjusting jig 8. And after the position of the positioning rib 7 is adjusted to be qualified, the positioning rib 7 and the partition plate 6 are fixed in a spot welding mode.
As shown in fig. 4, the inner diameter dimension of the positioning rib 7 is measured using the measuring tool 9. The measuring tool 9 comprises an L-shaped end and a V-shaped end, and the L-shaped ends of the measuring tool 9 are respectively placed on two sides of the dove tail type positioning rib 7. The hollow target ball 10 is placed at the V-shaped end of the measuring tool 9, so that reliable contact between the hollow target ball 10 and the measuring tool 9 is guaranteed. The position coordinates of the positioning rib 7 are measured using the laser tracker 5.
The specific implementation process steps of the invention are as follows:
1. placing 4 equal-height square boxes 1 at the installation station of the positioning ribs 7;
2. vertically placing a machine base 2 on the square box 1, wherein the end face of the machine base 2 faces upwards;
3. adjusting the verticality of the base 2 and the ground to be less than or equal to 0.1mm by using a level gauge, wherein the alignment part is a base foot 3;
4. adjusting the levelness of the upper end surface of the machine base 2 by using a level meter, wherein the alignment positions are the four equally-divided circumferences of the upper end surface of the machine base 2, and the levelness of the symmetrical positions is required to be less than or equal to 0.05 mm;
5. a fixed cross beam 4 is arranged on the upper end surface of the machine base 2, the center of the fixed cross beam 4 is adjusted to be concentric with the machine base 2, and the center deviation is less than or equal to 5 mm;
6. a laser tracker 5 is horizontally arranged below the fixed cross beam 4;
7. measuring the central coordinates of an upper end plate 11 and a lower end plate 12 of the machine base 2 by using a laser tracker 5, and measuring four points up and down, wherein the two measuring points are separated by 90 degrees;
8. establishing a central connecting line between an upper end plate 11 and a lower end plate 12 of the machine base 2, wherein the central line is the center of the machine base 2 and can be used as a reference for assembling the positioning ribs 7;
9. establishing theoretical position coordinates of all positioning ribs 7 according to the drawing size and using the theoretical position coordinates as a reference for alignment of the positioning ribs 7;
10. hoisting the positioning rib 7 into the machine base 2, and temporarily fixing two ends of the positioning rib 7 on the partition plate 6 by using an adjusting clamp 8;
11. adjusting the axial position, the circumferential position and the angle of the positioning rib 7 by using an adjusting clamp 8;
12. measuring the inner diameter of the positioning rib 7 by using a laser tracker 5, wherein the measuring tool 9 comprises an L-shaped end and a V-shaped end, the L-shaped end of the measuring tool 9 is respectively placed at two sides of the pigeon tail type positioning rib 7, the hollow target ball 10 is placed at the V-shaped end of the measuring tool 9, reliable contact between the hollow target ball 10 and the measuring tool 9 is ensured, and the position coordinate of the positioning rib 7 is measured by using the laser tracker 5;
13. the axial direction of each positioning rib 7 is totally measured at 6 positions, including 4 welding positions of the positioning ribs 7 and the machine base 2 and positions of end heads at two ends of the positioning ribs 7, the position coordinates of two sides of each dovetail-shaped positioning rib 7 are required to be measured at each position, 12 groups of data are required to be measured for each positioning rib 7, 18 positioning ribs 7 are required for each product, and 216 groups of data are required to be measured;
14. after the two sides of the positioning rib 7 are respectively measured, the central point coordinate of the positioning rib 7 is calculated, and the following two key dimensions are calculated through the central point coordinate of the positioning rib 7: firstly, the distance between the center of the positioning rib 7 and the center of the machine base 2, namely the radius of the positioning rib 7; the distance between the centers of the adjacent positioning ribs 7, namely the chord distance of the positioning ribs 7;
15. comparing and analyzing the measured data of the positioning rib 7 with the theoretical position coordinates to finally obtain the pigeon tail plane angle deviation of the positioning rib 7, and readjusting the positioning rib 7 according to the data analysis result when the deviation exceeds a specified value;
16. comparing and analyzing the measured data of the positioning rib 7 with the theoretical position coordinates, comparing and analyzing the calculated radius and chord distance size of the positioning rib 7 with the drawing requirement, wherein the required radius size is 0.2-0.3mm smaller than the nominal size, the difference between the maximum value and the minimum value of the chord distance is not more than 0.2mm, finally obtaining the position deviation of the positioning rib 7, and when the deviation exceeds the specified value, readjusting the positioning rib 7 according to the data analysis result;
17. comparing and analyzing the measured data of the positioning rib 7 with the theoretical position coordinates to finally obtain the verticality deviation of the positioning rib 7, and readjusting the positioning rib 7 according to the data analysis result when the deviation exceeds a specified value;
18. after the position of the positioning rib 7 is adjusted to be qualified, the positioning rib 7 and the partition plate 6 are fixed in a spot welding mode;
19. re-measuring the position coordinates of all the positioning ribs 7, comparing and analyzing the position coordinates with the theoretical position coordinates, and locally adjusting the positioning ribs 7 according to the data analysis result;
20. after the positioning ribs 7 are completely adjusted to be qualified, full welding is carried out on the welding seams between the positioning ribs 7 and the partition plates 6;
21. and after the welding seam is fully welded, re-measuring position coordinates of all the positioning ribs 7, comparing and analyzing the position coordinates with theoretical position coordinates, checking whether the welding assembly of the positioning ribs 7 meets the requirement of a drawing, grinding the welding seam of the positioning rib 7 when the deviation exceeds a specified value, re-adjusting the positioning rib 7 according to a data analysis result until all the welding assemblies are qualified, and finishing the welding assembly of the positioning rib 7.
Claims (1)
1. A technological method for aligning a dovetail positioning rib of a steam turbine generator is characterized by comprising the following steps: the method comprises the following steps:
1) 4 square boxes (1) with the same height are placed at the installation stations of the positioning ribs (7);
2) vertically placing the machine base (2) on the square box (1), wherein the end face of the machine base (2) faces upwards;
3) adjusting the verticality of the base (2) and the ground to be less than or equal to 0.1mm by using a level gauge, wherein the alignment part is a base foot (3);
4) adjusting the levelness of the upper end surface of the machine base (2) by using a level meter, wherein the alignment positions are the four positions of the circumference of the upper end surface of the machine base (2) in an equal division way, and the levelness of the symmetrical positions is required to be less than or equal to 0.05 mm;
5) a fixed cross beam (4) is arranged on the upper end face of the machine base (2), the center of the fixed cross beam (4) is adjusted to be concentric with the machine base (2), and the center deviation is less than or equal to 5 mm;
6) a laser tracker (5) is horizontally arranged below the fixed cross beam (4);
7) measuring the central coordinates of an upper end plate (11) and a lower end plate (12) of the machine base (2) by using a laser tracker (5), wherein four points are measured up and down and the two measurement points are separated by 90 degrees;
8) establishing a central connecting line between an upper end plate (11) and a lower end plate (12) of the machine base (2), wherein the central line is the center of the machine base (2) and is used as a reference for assembling the positioning ribs (7);
9) establishing theoretical position coordinates of all positioning ribs (7) according to the drawing size and using the theoretical position coordinates as a reference for alignment of the positioning ribs (7);
10) hoisting the positioning rib (7) into the base (2), and temporarily fixing two ends of the positioning rib (7) on the partition plate (6) by using an adjusting clamp (8);
11) adjusting the axial position, the circumferential position and the angle of the positioning rib (7) by using an adjusting clamp (8);
12) measuring the inner diameter of the positioning rib (7) by using a laser tracker (5), wherein a measuring tool (9) comprises an L-shaped end and a V-shaped end, the L-shaped end of the measuring tool (9) is respectively placed at two sides of the dove tail type positioning rib (7), a hollow target ball (10) is placed at the V-shaped end of the measuring tool (9), reliable contact between the hollow target ball (10) and the measuring tool (9) is ensured, and the position coordinate of the positioning rib (7) is measured by using the laser tracker (5);
13) each positioning rib (7) is axially and totally measured at 6 positions, including 4 welding positions of the positioning ribs (7) and the machine base (2) and positions of the end heads at two ends of the positioning ribs (7), each position needs to be respectively measured for position coordinates of two sides of the dove-tail positioning rib (7), each positioning rib (7) is totally required to measure 12 groups of data, each product is totally provided with 18 positioning ribs (7), and 216 groups of data are required to be measured;
14) after the two sides of the positioning rib (7) are respectively measured, the coordinate of the central point of the positioning rib (7) is calculated, and the following two key dimensions are calculated through the coordinate of the central point of the positioning rib (7): the distance between the center of the positioning rib (7) and the center of the machine base (2), namely the radius of the positioning rib (7); the distance between the centers of the adjacent positioning ribs (7), namely the chord distance of the positioning ribs (7);
15) comparing and analyzing the measured data of the positioning rib (7) with the theoretical position coordinates to finally obtain the pigeon tail plane angle deviation of the positioning rib (7), and readjusting the positioning rib (7) according to the data analysis result when the deviation exceeds a specified value;
16) comparing and analyzing the measured data of the positioning rib (7) with the theoretical position coordinate, comparing and analyzing the calculated radius and chord distance size of the positioning rib (7) with the drawing requirement, wherein the required radius size is 0.2-0.3mm smaller than the nominal size, the difference between the maximum value and the minimum value of the chord distance is not more than 0.2mm, finally obtaining the position deviation of the positioning rib (7), and readjusting the positioning rib (7) according to the data analysis result when the deviation exceeds the specified value;
17) comparing and analyzing the measured data of the positioning rib (7) with the theoretical position coordinates to finally obtain the verticality deviation of the positioning rib (7), and readjusting the positioning rib (7) according to the data analysis result when the deviation exceeds a specified value;
18) after the position of the positioning rib (7) is adjusted to be qualified, the positioning rib (7) and the partition plate (6) are fixed in a spot welding mode;
19) re-measuring the position coordinates of all the positioning ribs (7), comparing and analyzing the position coordinates with the theoretical position coordinates, and locally adjusting the positioning ribs (7) according to the data analysis result;
20) after the positioning ribs (7) are completely adjusted to be qualified, full welding is carried out on the welding seams between the positioning ribs (7) and the partition plates (6);
21) and after the welding seam is fully welded, re-measuring position coordinates of all the positioning ribs (7), comparing and analyzing the position coordinates with theoretical position coordinates, checking whether the welding assembly of the positioning ribs (7) meets the requirements of a drawing, grinding the welding seam of the positioning ribs (7) when the deviation exceeds a specified value, re-adjusting the positioning ribs (7) according to the data analysis result until all the welding assemblies are qualified, and finishing the welding assembly of the positioning ribs (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910601974.8A CN110253168B (en) | 2019-07-05 | 2019-07-05 | Process method for aligning dovetail type positioning rib of steam turbine generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910601974.8A CN110253168B (en) | 2019-07-05 | 2019-07-05 | Process method for aligning dovetail type positioning rib of steam turbine generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110253168A CN110253168A (en) | 2019-09-20 |
| CN110253168B true CN110253168B (en) | 2021-03-26 |
Family
ID=67924555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910601974.8A Active CN110253168B (en) | 2019-07-05 | 2019-07-05 | Process method for aligning dovetail type positioning rib of steam turbine generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110253168B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114094776B (en) * | 2021-11-16 | 2025-02-28 | 中国葛洲坝集团机电建设有限公司 | A method for efficiently installing positioning ribs and a measuring tool for stator positioning ribs |
| CN117989977A (en) * | 2024-01-12 | 2024-05-07 | 哈尔滨工业大学 | Method and device for measuring the installation position of the stator locating ribs of large hydro-generators |
| CN118287880B (en) * | 2024-03-14 | 2024-11-29 | 哈尔滨电机厂(镇江)有限责任公司 | A method for monitoring welding quality of steam turbine generator stator assembly |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6380656B1 (en) * | 2000-06-28 | 2002-04-30 | Visteon Global Technologies, Inc. | Liquid cooled alternator brush holder ribs |
| CN101758323A (en) * | 2009-11-27 | 2010-06-30 | 哈尔滨电机厂有限责任公司 | Dual-dovetail type unmovable key bar assembling and welding process for water turbine generator |
| CN102944170A (en) * | 2012-08-30 | 2013-02-27 | 哈尔滨汽轮机厂有限责任公司 | Method for carrying out alignment on stator part sleeves of steam turbine by utilizing laser tracker |
| CN104101296A (en) * | 2014-06-26 | 2014-10-15 | 北京新立机械有限责任公司 | Digital positioning detection method and system in large-scale structure precision assembly |
| CN104374333A (en) * | 2014-11-13 | 2015-02-25 | 天津天汽模飞悦航空装备技术有限公司 | Method for measuring large die profile through laser tracker |
| CN105945483A (en) * | 2016-06-20 | 2016-09-21 | 哈尔滨电机厂有限责任公司 | Before-welding adjustment and alignment process for positioning ribs of turbine generator |
| CN106271885A (en) * | 2016-08-31 | 2017-01-04 | 哈尔滨电机厂有限责任公司 | Steam turbine generator stand processing centering process |
| CN107255442A (en) * | 2017-06-06 | 2017-10-17 | 中国葛洲坝集团勘测设计有限公司 | Large scale hydraulic generator stator based on laser tracking technology installs measuring method |
| JP2018109552A (en) * | 2016-12-29 | 2018-07-12 | 三菱電機株式会社 | Alignment measurement system and alignment measurement method |
| CN109211066A (en) * | 2018-08-15 | 2019-01-15 | 哈尔滨电机厂有限责任公司 | A method of for centering detection dovetail type positioning bar string away from |
-
2019
- 2019-07-05 CN CN201910601974.8A patent/CN110253168B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6380656B1 (en) * | 2000-06-28 | 2002-04-30 | Visteon Global Technologies, Inc. | Liquid cooled alternator brush holder ribs |
| CN101758323A (en) * | 2009-11-27 | 2010-06-30 | 哈尔滨电机厂有限责任公司 | Dual-dovetail type unmovable key bar assembling and welding process for water turbine generator |
| CN102944170A (en) * | 2012-08-30 | 2013-02-27 | 哈尔滨汽轮机厂有限责任公司 | Method for carrying out alignment on stator part sleeves of steam turbine by utilizing laser tracker |
| CN104101296A (en) * | 2014-06-26 | 2014-10-15 | 北京新立机械有限责任公司 | Digital positioning detection method and system in large-scale structure precision assembly |
| CN104374333A (en) * | 2014-11-13 | 2015-02-25 | 天津天汽模飞悦航空装备技术有限公司 | Method for measuring large die profile through laser tracker |
| CN105945483A (en) * | 2016-06-20 | 2016-09-21 | 哈尔滨电机厂有限责任公司 | Before-welding adjustment and alignment process for positioning ribs of turbine generator |
| CN106271885A (en) * | 2016-08-31 | 2017-01-04 | 哈尔滨电机厂有限责任公司 | Steam turbine generator stand processing centering process |
| JP2018109552A (en) * | 2016-12-29 | 2018-07-12 | 三菱電機株式会社 | Alignment measurement system and alignment measurement method |
| CN107255442A (en) * | 2017-06-06 | 2017-10-17 | 中国葛洲坝集团勘测设计有限公司 | Large scale hydraulic generator stator based on laser tracking technology installs measuring method |
| CN109211066A (en) * | 2018-08-15 | 2019-01-15 | 哈尔滨电机厂有限责任公司 | A method of for centering detection dovetail type positioning bar string away from |
Non-Patent Citations (2)
| Title |
|---|
| 800MW级巨型全空冷水轮发电机定子安装技术;赵晓东等;《机械工程师》;20130210(第02期);全文 * |
| 激光跟踪仪在定位筋安装检测中的应用;张冠宇等;《全国工程测量2012技术研讨交流会论文集》;20120820;第98-100页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110253168A (en) | 2019-09-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110253168B (en) | Process method for aligning dovetail type positioning rib of steam turbine generator | |
| CN105223969B (en) | A kind of sensor mounting adjustment system and laser leveling benchmark device | |
| CN108917548B (en) | Turbine blade profile detection method and measuring device | |
| CN112775625B (en) | On-site processing technology and processing device of a large flange | |
| CN205068175U (en) | Sensor mounting adjustment system and laser instrument leveling standard apparatus | |
| CN101530937A (en) | Method for aligning, online detecting and correcting of gearwheel | |
| CN109909679B (en) | Method for improving split seat ring opening precision | |
| CN104551485A (en) | Positioning structure of welding tool | |
| CN109323643B (en) | Rapid detection device and method for blade profile of blisk subjected to electrolytic rough machining | |
| CN103033083B (en) | Hole strip, tooling for detecting hole strip and method for processing and detecting hole strip | |
| CN113624002A (en) | Method for adjusting center line of rotary kiln cylinder | |
| CN114012342B (en) | Water turbine runner positioning and welding method based on wedge-shaped auxiliary device | |
| CN109631720B (en) | Measuring method of annular cylinder | |
| CN114178556B (en) | Synchronous boring method for multi-hole arm support structural member | |
| CN108844444B (en) | Measuring tool and measuring method for perpendicularity and intersection degree of large-scale machine body cylinder hole and main shaft hole | |
| CN115157122B (en) | Grinding method of a jig used for grinding the upper yoke plate of the second-stage guide vane segment of a gas turbine | |
| CN110823061A (en) | Device and method for measuring different section radiuses of large thin-wall cylinder part | |
| US4545102A (en) | Tooling for and method of fabricating master models | |
| CN219736262U (en) | Clamping assembly and tool for gear measurement | |
| CN116000384B (en) | Key groove machining alignment device and method for double-key groove gear shaft | |
| CN111347206B (en) | Auxiliary device for assembling positioning rib plate of stator base of wind driven generator | |
| CN104819901A (en) | Scraper bending test combination testing device and use method | |
| CN113351686B (en) | Method for correcting low-pressure outer cylinder combined front guide plate of gas turbine | |
| CN113732340B (en) | Planetary hole boring method | |
| CN219094800U (en) | Point laser calibration tire sharpening machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |